Home / 116,518.21-160,776.45-65,530.78

Finding the Fourth Proportional to 116,518.21, 160,776.45 and 65,530.78

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Solution

The fourth proportional to 116,518.21, 160,776.45 and 65,530.78 is: 90,421.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,518.21 : 160,776.45 = 65,530.78 : x
  2. Step 2: Convert to fraction form
    116,518.21/160,776.45 = 65,530.78/x
  3. Step 3: Cross multiply
    116,518.21x = 160,776.45 × 65,530.78
  4. Step 4: Simplify right side
    116,518.21x = 10,535,806,174.13
  5. Step 5: Solve for x
    x = 10,535,806,174.13/116,518.21
  6. Step 6: Final answer
    x = 90,421.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.